Stormwater Treatment Area 3/4
Location: Palm Beach and Broward counties, Fla.
Client: South Florida Water Management District
Completion Date: 2004
Burns & McDonnell prepared the conceptual design and the general design memorandum for stormwater treatment area (STA) 3/4 and its associated features for the South Florida Water Management District as part of the Everglades Construction Project. Burns & McDonnell completed detailed designs and construction documents for the 16,600-acre STA, two pump stations with a combined capacity of 6,000 cfs, 19 miles of primary conveyance canals to and from the STA, new bridges on U.S. Highway 27, and a new water control structure in the North New River Canal. Burns & McDonnell also provided construction period engineering services for the entire project.
- Ecosystem restoration
- Water delivery systems
- Alternatives analyses
- Plan formulation
- Plan implementation
- Geotechnical investigations
- Extensive hydraulic analyses and design
- Water quality
- Detailed design of levees, canals, structures and pumping stations
- Construction engineering services
- Operations and water control plan
Overall project timeline
Conceptual design: 1994
General design memorandum: 1996
Supply and L-5 canals design: October 2000
STA 3/4 design: April 2001
Complete construction: April 2004
- Alternatives analyses for determination of final footprint and project features
- Two-dimensional modeling of six cells within the STA under various operational scenarios (detailed modeling with FESWMS 2-D)
- Analytical/statistical evaluation of historic data
- Water management operational modeling (daily analyses of proposed STA operations over 31-year period, using simulated inflows from SFWMM regional model)
- Water quality analyses (projections of project performance in phosphorus reduction)
- One-dimensional hydraulic analyses of canals using HEC-RAS and UNET
- Wave and wind action analyses over expansive heavily vegetated areas for establishing levee grades
- Aquifer performance test and 2-D (SEEP2D) and 3-D (MODFLOW) groundwater modeling
- Levee and canal design (40 miles and 29 miles, respectively)
- Hydraulic analyses and final design of 49 water control structures
- Design of two pump stations, with a maximum capacity of 3,670 cfs
- Design of new bridges for U.S. Route 27 and three canal crossings
- Preparation of a draft operations plan
- Cost estimation
- Schedule preparation using Primavera
